/*
 * Copyright 2010 Christian Schindelhauer, Peter Thiemann, Faisal Aslam, Luminous Fennell and Gidon Ernst.
 * All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 *
 * This code is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License version 3 for more details (a copy is
 * included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU General Public License
 * version 3 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 * Please contact Faisal Aslam
 * (aslam AT informatik.uni-freibug.de or studentresearcher AT gmail.com)
 * if you need additional information or have any questions.
 */
package takatuka.offlineGC.OGI.superInstruction;

import java.util.*;
import takatuka.classreader.dataObjs.*;
import takatuka.optimizer.cpGlobalization.logic.util.*;

/**
 * <p>Title: </p>
 * <p>Description:
 *
 * </p>
 * @author Faisal Aslam
 * @version 1.0
 */
public class SuperInstrsController {

    /**
     * It is static as across all threads each method's super instructions should
     * be created only once.
     */
    private final static HashMap<String, SuperInstruction> methodToSuperinstrsMap = new HashMap<String, SuperInstruction>();
    private static final SuperInstrsController myObj = new SuperInstrsController();

    private SuperInstrsController() {
    }

    public static SuperInstrsController getInstanceOf() {
        return myObj;
    }

    public void addSuperInstrsForMethod(MethodInfo method,
            SuperInstruction startintSuperInstr) {
        Oracle oracle = Oracle.getInstanceOf();
        String methodStr = oracle.getMethodOrFieldString(method);
        methodToSuperinstrsMap.put(methodStr, startintSuperInstr);
    }

    public SuperInstruction getSuperInstrForMethod(MethodInfo method) {
        Oracle oracle = Oracle.getInstanceOf();
        String methodStr = oracle.getMethodOrFieldString(method);
        return methodToSuperinstrsMap.get(methodStr);
    }

    @Override
    public String toString() {
        String ret = "" + CreateIntraMethodSuperInstrs.statPrint();
        Iterator<String> keys = methodToSuperinstrsMap.keySet().iterator();
        while (keys.hasNext()) {
            String methodName = keys.next();
            ret += "\n\n" + methodName + ":\n";
            SuperInstruction startSuperInstr = methodToSuperinstrsMap.get(methodName);
            ret += startSuperInstr;
        }
        return ret;
    }
}
